Hi,
It depends on how you want to create,i have put down in simple way here.
1.you first create a template for your article page - as you know the layout .
2. Feed you articles data through excel or xml or any structured format.
3.you can even have this file uploaded in dam
4.write a servlet which can read data from this excel and create pages.
5. Pagemanager api helps you to create pages . ( as suggested by @ruchim71073425 ) & update components after page is created.
6.you can hit this servlet in browser, to create pages.
Note : I hope this is one time creation of articles , you can run in batches rather than creating 1000 articles in one go.